[SPAM] Re: [xep-support] New Installment of CoolTools - The Document Magnifier

Hi
Can this be applied to part of a document? Specifically, a landscape
wide table spread over several pages in the middle of a portrait
orientation document. It looks as though I could insert an affine
matrix for 90 degree rotation before the table, and apply another after
the table to rotate in the opposite sense.
I'm thinking of Docbook, where landscape can only be applied to a single
page. I know it can be done on the Docbook FO output, but this looks
like a neater way to do it.
Or have I got it all wrong?
Ron

On 8/7/10 9:03 AM, Andy Black wrote:
> Thanks, Kevin. This worked great for me. Much appreciated.
>
> --Andy
>
> On 8/5/2010 4:53 PM, Kevin Brown wrote:
>> Inspired by a recent post by Andy Black, I thought I would put together a
>> quick XSL for magnifying documents.
>>
>> As with most CoolTools, this one relies on the XEP Intermediate Format -- we
>> call it XEPOUT. This format is documented here:
>>
>> http://www.renderx.com/reference.html#IntermediateFormatSpecification
>>
>> Remember -- there are many ways to get XEPOUT format. If you are running
>> from the command line, you can use xep.bat. Instead of specifying -pdf or
>> -ps for the output format, you just use -xep. So you might have something
>> like:
>>
>> xep.bat -xml myxml.xml -xsl myxsl.xsl -xep resultXEPOUT.xep
>>
>> You can also get XEPOUT programmatically by setting the mimetype to
>> "application/xep". To format a modified XEPOUT, one just passes it back
>> through RenderX. For xep.bat, one would use:
>>
>> xep.bat -xep resultXEPOUT.xep -pdf mypdf.pdf
>>
>> The document is not recomposed, only the final output is generated. As we
>> have shown in previous posts, you can do something like concatenate 1000s of
>> XEPOUT files together and create *huge* outputs as this final process from
>> XEPOUT to output (like PDF or PostScript) is very fast and takes very little
>> memory.
>>
>> What is not documented at the above link is that there is also an XEPOUT
>> element called "xep:transform". It is not documented because while it is
>> built into the XEP Engine, there are no constructs in FO that currently
>> cause this element to be created. However, that doesn't stop us from telling
>> you about it nor using it in various projects we have created.
>>
>> The "transform" element allows you to apply an affine matrix to all content
>> that follows this element. Since Andy is looking for scaling, we could
>> insert something like this in the XEPOUT document to scale the elements that
>> follow:
>>
>> <xep:transform a="2" b="0" c="0" d="2" e="0" f="0"/>
>>
>> Now, for the engineers out there, you would recall this is essentially (my
>> math is rusty but I think I have this one right!):
>>
>> | 2 0 0 |
>> | 0 2 0 |
>> | 0 0 1 |
>>
>> Where the attributes are as following for an affine matrix:
>>
>> | a b 0 |
>> | c d 0 |
>> | e f 1 |
>>
>> If the above<xep:transform> element inserted into the XEPOUT, it would
>> scale all content following it. The scale would be "2" (double the size)
>> because "a" and "d" (scale-x and scale-y respectively) are 2. You should
>> note that all elements work ... if you would like to see cool examples with
>> text that is rotated at arbitrary degrees and progressively scaled, just say
>> so. This element allows you to scale, translate and rotate.
>>
>> Back to Andy's needs .... Now, we also need to change the page dimensions to
>> accommodate the size. We could write an easy identity-translate to operate
>> on XEPOUT and scale pages. By the way, choosing something like scale-x as
>> "5" and scale-y as "1" will turn you pages into silly putty, if that is what
>> you want, my kids thought that way funny when I did it!
>>
>> *****************************************
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>> xmlns:xep="http://www.renderx.com/XEP/xep" version="1.0">
>> <xsl:param name="scale-x">3</xsl:param>
>> <xsl:param name="scale-y">3</xsl:param>
>> <xsl:template match="xep:document">
>> <xsl:copy>
>> <xsl:apply-templates select="@*" mode="identity-copy"/>
>> <xsl:apply-templates/>
>> </xsl:copy>
>> </xsl:template>
>>
>> <xsl:template match="xep:page">
>> <xep:page>
>> <!-- Scale the page width and height -->
>> <xsl:attribute name="width">
>> <xsl:value-of select="@width * $scale-x"/>
>> </xsl:attribute>
>> <xsl:attribute name="height">
>> <xsl:value-of select="@height * $scale-y"/>
>> </xsl:attribute>
>> <xsl:attribute name="page-number">
>> <xsl:value-of select="@page-number"/>
>> </xsl:attribute>
>> <xsl:attribute name="page-id">
>> <xsl:value-of select="@page-id"/>
>> </xsl:attribute>
>> <!-- Insert Transform -->
>> <xep:transform a="{$scale-x}" b="0" c="0" d="{$scale-y}" e="0"
>> f="0"/>
>> <!-- Output Content -->
>> <xsl:apply-templates select="*" mode="identity-copy"/>
>> </xep:page>
>> </xsl:template>
>>
>> <!-- identity copy rules -->
>> <xsl:template match="node() | @*" mode="identity-copy"
>> name="identity-copy">
>> <xsl:copy>
>> <xsl:apply-templates select="@*" mode="identity-copy"/>
>> <xsl:apply-templates select="node()" mode="identity-copy"/>
>> </xsl:copy>
>> </xsl:template>
>>
>> </xsl:stylesheet>
>>
>> *************************************************
>>
>> Give it a try! If you would like a set of samples, I would be happy to share
>> but I promised a quick post to help Andy out and here it is.
>>
>> Kevin Brown
>> RenderX Inc
>> kevin@renderx.com
>> 650-327-1000
>>
>>
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>>
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-- 
Ron Catterall Ph.D. D.Sc.
ron@catterall.net
http://catterall.net

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